I think you need to remember than lots of things could have happened in that time, such as

-She may no longer be practicing
-She may no longer be signed up to that website
-She may only be PT
-She may be off from work for illness/maternity leave etc
-She may be on holiday

The most probable thing would be that she just hasn't checked her emails. If the phone number is on the website, why not call her instead?